Inheritance and Variation Patterns Quiz
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Questions and Answers

What is the process where the haploid nucleus of a sperm cell merges with the haploid nucleus of an egg cell to form a diploid zygote?

  • Crossing over
  • Meiosis
  • Mitosis
  • Fertilization (correct)

In which stage of meiosis does crossing over occur?

  • Telophase I
  • Prophase I (correct)
  • Metaphase I
  • Anaphase I

What is the term for the division that forms gametes like sperm and eggs?

  • Cytokinesis
  • Meiosis (correct)
  • Fertilization
  • Mitosis

Which genetic disorder is caused by the presence of an additional chromosome 21?

<p>Trisomy 21 (Down syndrome) (A)</p> Signup and view all the answers

Which event in meiosis can lead to genetic variation in offspring?

<p>Crossing over (D)</p> Signup and view all the answers

In Mendelian genetics, what are different versions of a gene for a trait called?

<p>Alleles (D)</p> Signup and view all the answers

What is the main cause of a person's unique characteristics?

<p>The set of genes inherited from parents (D)</p> Signup and view all the answers

What is the function of sister chromatids during cell division?

<p>Exact copies made during replication (D)</p> Signup and view all the answers

Which cells have one set of chromosomes and are produced in reproductive organs?

<p>Gametes (C)</p> Signup and view all the answers

What is the difference between continuous and discrete variation?

<p>Continuous variation shows a range of traits like height, mass, and color, while discrete variation is not visibly apparent like blood type. (B)</p> Signup and view all the answers

Where do centromeres, the 'pinched-in' areas on chromosomes, attach during cell division?

<p>To spindle fibers (B)</p> Signup and view all the answers

Which term refers to different versions of the same gene, such as purple flower vs. white flower?

<p>Alleles (D)</p> Signup and view all the answers

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